S. 147 : Reassessment-After the expiry of four years-Business expenditure-Wages and salaries expenditure-Liability on account of retrospective revision in salaries of seconded employees crystallised during relevant assessment year-Full disclosure in accounts-Conditions of section 149(1)(b) not satisfied as escapement not represented in the form of an asset-Order under section 148A(d), notice under section 148 and reassessment proceedings quashed. [S. 37(1), 148, 148A(b), 148A(d), 149(1)(b), Art. 226]